Base for concrete structures.



R. LINKLETTER.l

BASE EoR CONCRETE STRUCTURES.

APPLICATION FILED OLT. 7. 1915.

Patent-ed Nov. 7, 1916.

ooo@ oo oo ocoooqooo oo A, OfD d0 OO OO O O O IO O O OO OO OO @no OO O 0IA ooooo "I j. ooooo BY ATTORNEY ROBERT LINKLETTER, OF JERSEY CITY, NEW". JERSEY, ASSIGNOR, BY DIRECT AND 'MESNE ASSIGNMENTS, 0F ONE-THIRD TO HIMSELF AND TWO-THIRDS TO GEORGE W. MUTTART, 0F JERSEY CITY, NEW JERSEY. l

BASE FOR CONCRETE STRUCTURES.

Specification of Letters Patent.

'Patented ov. '7, 1916.

To all whom' it may concern:

Be it known that I, ROBERT LINKLETTER, a citizen of the United States, residing at Jersey City, in the county of Hudson and State of New Jersey, have invented new and useful Improvements in Bases for Concrete Structures, of which the following is a full, clear, and exact description.

My invention relates to the art of building, my more particular purpose being to provide a framework known in this art as a base, upon which concrete or other plastic material is spread and allowed to. set, so as to form a wall, partition, ceiling, floor or the like. l

My invention further contemplates an improved form of board, made of concrete or other material v originally in a plastic form, this board, because of its shape and structure, being especially adapted to be built into and form a part of the base just mentioned.

Reference is made to the accompanying drawing forming a part of this specification, and in which like letters 'indicate like parts in all of the gures.

Figure 1 is a section through a partlyfinished wall made in accordance with my invention, and is taken on the line 1-1 of Fig. 3, looking in the direction indicated by the arrows. Fig. 2 is a view showing one of the boards, partly in plan and partly broken away. Fig. 3 is an elevation of a partlyfinished wall constructed in accordance with my invention, certain portions being broken away. Fig. 4 is a perspective of a fastening used for holding the 'boards in position at all times, but more particularly before the structure is completed.

The general form of the board may be understood from Fig. 2. A body member 5\has in general outlines the proximate form of a rectangle, the corners, however being provided with obliquely disposed facets 6. The body member is provided with holes 7 each extending through it and having a frusto-conical form. The body member 5 is further provided with a number of projecting portions 8, each of annular form. These projecting portions virtually increase the thickness of the body member 5, around each hole 7, and in so doing they slightly increase the depth of the holes.

They are all disposed upon one face of the l board, and encircle ,the portions of smallest dlameter of the holes as indicated in Fig. 1. Each body member 5 is provided adjacent the facets 6, with corner portions 9, which are not provided with holes 7. That is to say the corner portions are each large enough to contain a hole 7', but such hole is omitted. The strength of the board is thus increased, the corner portions especially be- 1ng strengthened, both by omission of the holes from them and by giving them such form as to avoid sharp angles. lThe annular projectionsS also strengthen the board, by adding material so as to reinforce it where it would otherwise be weakened by the presence of the holes.

The edge of each hole 7, whereV bounded by the adjacent annular projection 8, is'

rounded slightly in itscross section, as indicated in Fig. 1, and the annular projectlon itself is sloped slightly a short distance from the hole, in order to avoid abrupt bends in the surface of the material.

Each body member 5 carries a sheet lof paper 10, which adheres firmly to it. If the body member be made of plaster of Paris, concrete or other'plastic material and while soft brought into close contact or under pressure with the paper, the latter adheres ir'mly 'and the degree of adhesion increases as the material hardens and sets. The sheet of paper 10 has proper conformity to fit upon the various annular projections 8, vand is provided with portions 11 of frusto-coni cal form extending entirely through .the hole and bounding the same. The sheet of paper 10 completely covers one face-of the body member 5, and extends flush with the edges thereof. The body member 5 also carries a sheet of waterproof paper 12, which as al rule is not secured to the body member 5 at the time the latter is in a plastic state, but is applied at any time after the body member 5 has set or hardened. Preferably the waterproof paper consists of strong paper saturated with asphalt or thick tar, and thus rendered adhesive so as to cling to the body member. While the length and breadth ofv the sheet of water roof paper arethe sameijs.

the contraryit closes the holes 7 at the adjacent ends thereof. That is, it extends across these holes at their portions of maximum diameter.

I provide a few boards 17 which are each of only half the size of the boards above described, and these smaller boards I desig- 'nate as half-boards. Their use is merelyto half-bricks are used at intervals in brickwork in order to :,stagger the vmortar joints thereof. For use in holding the boards together in a wall or the like, I provide metallic fasteners 18, each being of substantially U-form, as shown inFig. 4.. At 19, 20 are shown two layers ofv lastic material, such as concrete or plaster o Paris,used'for the outer surface of the wall or other structure to be built.

In building a wall or analogous structure I arrangethe plates edge to edge, so that the margins 13,A 1 of one board overlap mating edges l5, 16 of .two adjacent boards. In

' the form of wall shown in Figs.l 1 and 2,lI

place the boards in two groups, the boards in each group being edge to edge and staggered as above described, the boards of one group facing in a direction opposite to those of the other group. That is, the boards of 4one group all have their annular projections 8 facing in one direction, While the boards of the other group all have their projections l8 facing in the opposite direction. vConsid- When the plastic material, such as concrete or cement, is afterward spread on as indiportions of two plates, as shown in Fig. 1. Then, when the soft plastic material is spread on, it fills the holes and envelops the crater-like portions 21, 22 of waterproof paper and thereby makes a very strong anchorage and bond.

The annular projections 8 not only strengthen the boards, but to some eXtent serve as shelves-for supporting the soft material spread over the faces of the plates.

The annular projections also increase the firmness of the anchorage between the boards (now formed into a base) and the plastic material spread on, by increasing the diiiiculty of any vaccidental sliding movement of the plastic material, especially while in a state of softness, relative to the' base vmade up of the boards.

As the plastic material is spread upon the basic structure, it flows into and fills the triangular openings each formed by two facets 6 and the edge of the board immediately adjacent.` The plastic material is thus more firmly anchored upon the basic structure. The fastenings 18 remain inthe wall, and thus permanently increase its strength.

The waterproof paper is used principallyv ininstances where the wall is exposed to the action of moisture.A The waterproof'paper serves also a good purpose in conserving the moisture'of the concrete, cement or vother plastic material spread upon the basic structure. Thatis to say, when the plastic material is spread on it contains water, and if this water makes its escape by oozing through the joints or fissures of the-basic structure, or even is taken up by capillarity of some adjacent portion of the wall, the setting of the plastic material is unduly quickened and the result is not satisfactory. By use of the waterproof paper the moisture is retained within the plastic material until the latter has adequate time to set.

As the various boards or building units may be arranged in many different ways, I do not limit myself to the particular grouping shown. 'Neither do I limit myself tothe eX- act construction shown for the board or building unit, the scope of my invention being commensurate with my claims.

I claim 1. In a deviceA of the character described the combination of a plurality of'boards disposed in groups and each provided with anchor holes, the boards of one group being staggered relatively to the boards of another group, a number of fastening members each engaging a board of each of the two groups and extending through the anchor holes thereof, and a quantity of plastic material adhering vto said boards and filled into said anchor holes thereof, so as to conceal said fastening members.

2. A building unit, comprising a flat body member' provided with anchor lholes and with thickened portions encircling said anchor holes and extending slightly from the face of said body member.

3. A building unit, comprising a flat body member provided with lanchor' holes of sub- '1 stantially frusto-conical formv extending through it and With annular projections each encircling a hole and extending integrally a slight distance outwardly from the face of the board. v

4. A base for concrete structures compris-- ing a number of boards disposed edge to edge, each board being provided with vanchor holes and with projecting portions encircling said holes and extending integrally from lthe faces of said boards, and a quantity of plastic material spread over said boards and partially resting upon said projecting portions, said\plastic material extending integrally into said anchor holes.

In testimony whereof I have signed my name tothis specilication.

ROBERT LINKLETTER. 

